Compass pencil clamp

Details Compass pencil clamp Compass pencil clamp

1980-12-19

1982-11-16

Phillips, Charles E.

Geometrical instruments

Scriber

Curved line

33149H, 33152B, B43L 924

Patent

active

043588948

ABSTRACT:
A drawing compass having two legs is provided with a writing implement or pencil clamp in the form of a cylindrical band having a side opening. A longitudinally extending flexible rib is provided which projects inwardly into the channel formed by the cylindrical band. The rib facilitates the accurate securement of the writing implement within the clamp.
Additionally, fully functional clamping levers are disclosed which are both cheaper and easier to manufacture than those previously used.

REFERENCES:
patent: 2045298 (1936-06-01), Hanle
patent: 2582585 (1952-01-01), De Cesaris
patent: 2764816 (1956-10-01), De Cesaris
patent: 3020641 (1962-02-01), Augustin

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